Service jack



FIG. 1 is a front perspective view of the service jack as show in FIG. 1;

FIG. 2 is a front view of the service jack as shown in FIG. 1;

FIG. 3 is a rear view of the service jack as shown in FIG. 1;

FIG. 4 is a left side view, the right side view being a mirror thereof;

FIG. 5 is a top view of the service jack as shown in FIG. 1; and,

FIG. 6 is a bottom view of the service jack as shown in FIG. 1.

The broken lines shown in the figures are for the purpose of illustrating portions of the service jack and from no part of the claimed design. 

CLAIM The ornamental design for a service jack, as shown and described. 